Wannier-Stark ladder in the linear absorption of a random system with scale-free disorder
| dc.contributor.author | Díaz García, Elena | |
| dc.contributor.author | Domínguez-Adame Acosta, Francisco | |
| dc.contributor.author | Kosevich, Yu | |
| dc.contributor.author | Malyshev, Andrey | |
| dc.date.accessioned | 2023-06-20T10:48:08Z | |
| dc.date.available | 2023-06-20T10:48:08Z | |
| dc.date.issued | 2006-05 | |
| dc.description | © 2006 The American Physical Society. Work at Madrid was supported by MEC Project No. MAT2003-01533. Yu.A.K. acknowledges support from Generalitat Valenciana Grant No. CTESIN/2005/022. V.A.M. acknowledges support from NanoNed, a national nanotechnology programme coordinated by the Dutch Min istry of Economic Affairs, and from ISTC Grant No. 2679. | |
| dc.description.abstract | We study numerically the linear optical response of a quasiparticle moving on a one-dimensional disordered lattice in the presence of a linear bias. The random site potential is assumed to be long-range correlated with a power-law spectral density S(k)similar to 1/k(alpha), alpha > 0. This type of correlation results in a phase of extended states at the band center, provided alpha is larger than a critical value alpha(c) [F. A. B. F. de Moura and M. L. Lyra, Phys. Rev. Lett. 81, 3735 (1998)]. The width of the delocalized phase can be tested by applying an external electric field: Bloch-like oscillations of a quasiparticle wave packet are governed by the two mobility edges, playing now the role of band edges [F. Dominguez-Adame , Phys. Rev. Lett. 91, 197402 (2003)]. We demonstrate that the frequency-domain counterpart of these oscillations, the so-called Wannier-Stark ladder, also arises in this system. When the phase of extended states emerges in the system, this ladder turns out to be a comb of doublets, for some range of disorder strength and bias. Linear optical absorption provides a tool to detect this level structure. | |
| dc.description.department | Depto. de Física de Materiales | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | MEC | |
| dc.description.sponsorship | Generalitat Valenciana | |
| dc.description.sponsorship | NanoNed | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/27396 | |
| dc.identifier.doi | 10.1103/PhysRevB.73.174210 | |
| dc.identifier.issn | 1098-0121 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1103/PhysRevB.73.174210 | |
| dc.identifier.relatedurl | http://journals.aps.org/ | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/51249 | |
| dc.issue.number | 17 | |
| dc.journal.title | Physical Review B | |
| dc.language.iso | eng | |
| dc.publisher | American Physical Society | |
| dc.relation.projectID | MAT2003-01533 | |
| dc.relation.projectID | CTESIN/2005/022 | |
| dc.relation.projectID | 2679 | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 938.9 | |
| dc.subject.keyword | Range Correlated Disorder | |
| dc.subject.keyword | Metal-Insulator-Transition | |
| dc.subject.keyword | 1d Anderson Model | |
| dc.subject.keyword | Delta-Doped Gaas | |
| dc.subject.keyword | Bloch Oscillations | |
| dc.subject.keyword | Electric-Field | |
| dc.subject.keyword | Semiconductor Superlattices | |
| dc.subject.keyword | Radiative Lifetime | |
| dc.subject.keyword | Optical-Properties | |
| dc.subject.keyword | Frenkel Exciton | |
| dc.subject.ucm | Física de materiales | |
| dc.title | Wannier-Stark ladder in the linear absorption of a random system with scale-free disorder | |
| dc.type | journal article | |
| dc.volume.number | 73 | |
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